/Engine/Source/Runtime/Landscape/Classes/LandscapeProxy.h
FAsyncGrassTask ( FAsyncGrassBuilder * InBuilder, const [FCachedLandscapeFoliage::FGrassCompKey](API\Runtime\Landscape\FCachedLandscapeFoliage\FGrassCompKey) & InKey, [UHierarchicalInstancedStaticMeshComponent](API\Runtime\Engine\Components\UHierarchicalInstancedStaticMesh-) * InFoliage )